CN113114284B - Control method and control device of radio frequency circuit and electronic equipment - Google Patents
Control method and control device of radio frequency circuit and electronic equipment Download PDFInfo
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- CN113114284B CN113114284B CN202110386488.6A CN202110386488A CN113114284B CN 113114284 B CN113114284 B CN 113114284B CN 202110386488 A CN202110386488 A CN 202110386488A CN 113114284 B CN113114284 B CN 113114284B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
Abstract
The application discloses a control method and a control device of a radio frequency circuit and electronic equipment, and belongs to the technical field of radio frequency circuits. The radio frequency circuit comprises a first radio frequency path and a second radio frequency path, and the method comprises the following steps: outputting a preset reference power through the calibrated first radio frequency path, and measuring a first feedback value corresponding to the reference power; outputting the reference power through a second radio frequency channel, and measuring a second feedback value when the second radio frequency channel outputs the reference power; calculating the difference value between the first feedback value and the second feedback value, and recording as a first compensation value; and determining the first transmission power of the second radio frequency path according to the first compensation value.
Description
Technical Field
The application belongs to the technical field of radio frequency circuits, and particularly relates to a control method and a control device of a radio frequency circuit and electronic equipment.
Background
In the related art, when the rf circuit transmits, a power calibration (FBRX) is required to obtain an accurate transmit power of the rf path, and the FBRX needs to set a directional Coupler (Coupler) before a Double Pole Double finger switch (DPDT) of the path switching device.
As the integration of the rf circuit increases, the directional coupler needs to be arranged behind the DPDT in the integrated rf circuit, which results in calibration of FBRX on two rf paths, resulting in long time consumption and complicated parameter setting.
How to reduce the calibration times and thus reduce the time consumption for obtaining the dual rf path transmission power is a technical problem to be solved urgently.
Disclosure of Invention
An object of the embodiments of the present application is to provide a control method and a control apparatus for a radio frequency circuit, and an electronic device, which can obtain accurate transmission powers of two paths through one calibration.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a method for controlling a radio frequency circuit, where the radio frequency circuit includes a first radio frequency path and a second radio frequency path, and the method includes:
outputting a preset reference power through the calibrated first radio frequency channel, and measuring a first feedback value corresponding to the reference power;
outputting the reference power through a second radio frequency channel, and measuring a second feedback value when the second radio frequency channel outputs the reference power;
calculating the difference value between the first feedback value and the second feedback value, and recording as a first compensation value;
and determining the first transmitting power of the second radio frequency path according to the first compensation value.
In a second aspect, an embodiment of the present application provides a control apparatus for a radio frequency circuit, where the radio frequency circuit includes a first radio frequency path and a second radio frequency path, and the apparatus includes:
the first measurement unit is used for outputting preset reference power through the calibrated first radio frequency channel and measuring a first feedback value corresponding to the reference power;
the second measuring unit is used for outputting the reference power through a second radio frequency channel and measuring a second feedback value when the second radio frequency channel outputs the reference power;
the determining unit is used for calculating the difference value between the first feedback value and the second feedback value and recording the difference value as a first compensation value; and determining the first transmitting power of the second radio frequency path according to the first compensation value.
In a third aspect, an embodiment of the present application provides an electronic device, which includes a memory and a processor, where the memory stores a program or an instruction, and the processor is configured to implement the steps of the control method for the radio frequency circuit according to the first aspect when executing the program or the instruction.
In a fourth aspect, the present application provides a readable storage medium, on which a program or instructions are stored, and the program or instructions, when executed by a processor, implement the steps of the control method of the radio frequency circuit provided in the first aspect.
In the embodiment of the application, the radio frequency circuit comprises two radio frequency paths, specifically, a first radio frequency path and a second radio frequency path, the first radio frequency path and the second radio frequency path are respectively connected with the first antenna and the second antenna, and when the electronic device works, the paths can be switched according to the signal strength of the first antenna and the signal strength of the second antenna, so that smooth data communication of the electronic device is ensured.
When transmitting radio frequency signals through any antenna, i.e. through a radio frequency path, the transmission power thereof needs to be determined. For the radio frequency circuit with two radio frequency paths, the first radio frequency path is calibrated, so that the accurate transmitting power of the first radio frequency path is obtained.
Specifically, a preset reference power is output through the calibrated first radio frequency path, and the reference power can be customized according to requirements, such as the reference power is 20dBm, 23dBm, and the like. When the output power through the first rf path is the reference power, the FBRX detection result at this time is measured, that is, the first feedback value when the reference power is output through the first rf path is measured.
Furthermore, after the first feedback value is obtained, the first rf path may be switched to the second rf path to output the reference power, and the corresponding second feedback value is detected while the second rf path outputs the reference power, and the difference between the first feedback value and the second feedback value is measured and compared by an electronic device provided with an rf circuit, and is compensated, so that the transmission power of the second rf path, that is, the first transmission power, may be quickly calculated by measuring the corresponding FBRX detection result, that is, the third feedback value when the power is output through the second rf path, while the power is output through the second rf path, and according to the first feedback value and the third feedback value.
According to the embodiment of the application, the accurate transmitting power of the radio frequency access is obtained by calibrating the power of one radio frequency access in the plurality of radio frequency accesses, then the power is respectively acquired on different radio frequency accesses, when the same power is output, the FBRX detection result, namely the difference between the first feedback value and the third feedback value, the opportunity transmitting power of the uncalibrated radio frequency access is calculated according to the difference, and therefore, the accurate transmitting power of the uncalibrated radio frequency access can be obtained under the condition that only one calibration is carried out, the time consumption for obtaining the transmitting power of the double radio frequency accesses and the complexity of parameter setting can be effectively reduced, and the working efficiency of the radio frequency circuit and the electronic equipment which adopt the embodiment of the application is improved.
Drawings
Fig. 1 shows one of the flow charts of a control method of a radio frequency circuit according to an embodiment of the present application;
fig. 2 illustrates a second flowchart of a control method of a radio frequency circuit according to an embodiment of the present application;
fig. 3 shows a third flowchart of a control method of a radio frequency circuit according to an embodiment of the present application;
fig. 4 shows a fourth flowchart of a control method of a radio frequency circuit according to an embodiment of the present application;
fig. 5 is a block diagram showing a control apparatus of a radio frequency circuit according to an embodiment of the present application;
FIG. 6 shows a block diagram of an electronic device according to an embodiment of the application;
fig. 7 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below clearly with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/", and generally means that the former and latter related objects are in an "or" relationship.
The following describes in detail a control method, a control device, and an electronic device of a radio frequency circuit provided in the embodiments of the present application through specific embodiments and application scenarios thereof with reference to the accompanying drawings.
In some embodiments of the present application, a method for controlling a radio frequency circuit is provided, where the radio frequency circuit includes a first radio frequency path and a second radio frequency path, and fig. 1 shows one of flowcharts of a method for controlling a radio frequency circuit according to an embodiment of the present application, and as shown in fig. 1, the method includes:
and step 108, determining the first transmission power of the second radio frequency channel according to the first compensation value.
In the embodiment of the application, the radio frequency circuit comprises two radio frequency paths, specifically, a first radio frequency path and a second radio frequency path, the first radio frequency path and the second radio frequency path are respectively connected with the first antenna and the second antenna, and when the electronic device works, the paths can be switched according to the signal strength of the first antenna and the signal strength of the second antenna, so that smooth data communication of the electronic device is ensured.
When transmitting radio frequency signals through any antenna, i.e. through a radio frequency path, the transmission power thereof needs to be determined. For the radio frequency circuit with two radio frequency paths, the first radio frequency path is calibrated, so that the accurate transmitting power of the first radio frequency path is obtained.
Specifically, a preset reference power is output through the calibrated first radio frequency path, and the reference power can be customized according to requirements, such as the reference power is 20dBm, 23dBm, and the like. When the output power through the first rf path is the reference power, the FBRX detection result at this time is measured, that is, the first feedback value when the reference power is output through the first rf path is measured.
Furthermore, after the first feedback value is obtained, the first rf path may be switched to the second rf path to output the reference power, and the corresponding second feedback value is detected while the second rf path outputs the reference power, and the difference between the first feedback value and the second feedback value is measured and compared by an electronic device provided with an rf circuit, and is compensated, so that the transmission power of the second rf path, that is, the first transmission power, may be quickly calculated by measuring the corresponding FBRX detection result, that is, the third feedback value when the power is output through the second rf path, while the power is output through the second rf path, and according to the first feedback value and the third feedback value.
When the specific transmission power of the second rf path, i.e., the first transmission power, is determined through the first feedback value, the third feedback value, and the reference power, the DPDT switch path may be controlled after the calibrated first rf path outputs the predetermined reference power, so as to output the reference power through the second rf path.
It should be noted that, since the second rf path has not been power calibrated yet, the step of "outputting the reference power through the second rf path" herein does not control the accurate output reference power of the second rf path, but the power of the input terminal of the DPDT remains unchanged after the DPDT switches the path.
After the DPDT is switched to the second RF path, a second feedback value of the second RF path is measured. And measuring and comparing the difference between the first feedback value and the second feedback value, compensating the difference, obtaining the accurate transmitting power of the second radio frequency channel according to the first compensation value, namely the first transmitting power, wherein the corresponding first compensation value is the difference between the first feedback value and the second feedback value. Therefore, the embodiment of the application can obtain the accurate transmitting power of the two radio frequency paths under the condition of only once calibration.
According to the embodiment of the application, the accurate transmitting power of the radio frequency access is obtained by calibrating the power of one radio frequency access in the plurality of radio frequency accesses, then the power is respectively acquired on different radio frequency accesses, when the same power is output, the FBRX detection result, namely the difference between the first feedback value and the third feedback value, the opportunity transmitting power of the uncalibrated radio frequency access is calculated according to the difference, and therefore, the accurate transmitting power of the uncalibrated radio frequency access can be obtained under the condition that only one calibration is carried out, the time consumption for obtaining the transmitting power of the double radio frequency accesses and the complexity of parameter setting can be effectively reduced, and the working efficiency of the radio frequency circuit and the electronic equipment which adopt the embodiment of the application is improved.
In some embodiments of the present application, fig. 2 illustrates a second flowchart of a control method of a radio frequency circuit according to an embodiment of the present application, where as illustrated in fig. 2, the control method includes:
in step 206, a first transmit power is determined based on the target feedback value and the reference power.
In the embodiment of the present application, the target feedback value is determined by the sum of the third feedback value and the first compensation value. Specifically, when the reference power is output on the first rf path, the obtained FBRX result, that is, the first feedback Value is Value1, and after the DPDT is switched to the second rf path, the measured FBRX result, that is, the second feedback Value is Value2, as can be seen from the above embodiment, the first compensation Value Offset satisfies the formula: offset = Value1-Value2.
Therefore, when the rf circuit is normally operated, and power output is performed through the second rf loop, value1'= Value2' + Offset is satisfied, where Value2 'is a third feedback Value measured when power output is performed through the second rf loop, and according to the sum of the third feedback Value2' and the first compensation Value Offset, the transmit power when the power is output through the first rf loop can be reflected, and since the first rf loop is calibrated, the transmit power is accurate, and further, the accurate transmit power of the second rf loop can be obtained through the corresponding relationship, so that accurate transmit power of two rf paths can be determined when only one rf path is calibrated.
In some embodiments of the present application, determining the first transmit power according to the first feedback value, the third feedback value, and the reference power further includes: collecting port power of a second radio frequency channel; calculating the difference between the reference power and the port power and recording the difference as a second compensation value; determining a first transmit power from the first compensation value, comprising: determining the actual power according to the sum of the reference power and the second compensation value; and determining the first transmitting power according to the target feedback value and the actual power.
In the embodiment of the present application, the first compensation coefficient, that is, the difference between the first feedback value and the second feedback value, actually represents the data difference between the directional Coupler1 disposed on the first rf path and the directional Coupler2 disposed on the second rf path, and because there is path insertion loss, when the distance between the antenna and the directional Coupler is longer on the second rf path, that is, the path is longer, the path insertion loss of the antenna will also become larger, which causes the rf power actually output from the second antenna, that is, the actual output power of the second rf path is not equal to the power input at the DPDT input end, and causes the finally determined first output power of the second path to be not in accordance with the actual output power.
Therefore, when the second rf path outputs the reference power, the port power of the second rf path may be collected, the port power is based on the measured actual power, so that the error caused by the path insertion loss is removed, and the difference between the reference power and the port power is calculated and recorded as the second compensation value, which is a compensation value considering the path insertion loss and is used to compensate the path insertion loss when determining the first transmit power of the second rf path.
Further, when the actual transmission power of the second rf path, that is, the first transmission power is determined, the actual transmission power may be determined according to the sum of the reference power and the second compensation value, that is, when the second rf path transmits an rf signal, the actual output power of the second rf path determines the first transmission power according to the actual power and the target feedback value, which may effectively avoid an error caused by path insertion loss, and further, under the condition of one calibration, obtain accurate transmission powers of the two paths.
In some embodiments of the present application, before outputting the preset reference power through the calibrated first rf path, the method further includes: and performing power calibration on the first radio frequency path to obtain second transmitting power of the first radio frequency path.
In the embodiment of the present application, power calibration is performed once on one of two radio frequency paths, specifically, power calibration is performed on a first radio frequency path, and accurate transmission power of the first radio frequency path, that is, the second transmission power, is obtained through single power calibration, so that further according to an FBRX detection result, accurate transmission power of another radio frequency path, that is, accurate transmission power of the second radio frequency path, that is, the first transmission power, is obtained, and thus, accurate transmission power of the two radio frequency paths is determined under the condition that only one radio frequency path is calibrated.
In some embodiments of the present application, fig. 3 shows a third flowchart of a control method of a radio frequency circuit according to an embodiment of the present application, and as shown in fig. 3, the control method of the radio frequency circuit further includes:
and step 304, controlling the radio frequency circuit to switch the radio frequency channel according to the first receiving level, the second receiving level, the first transmitting power and the second transmitting power.
In this embodiment, in the working process of the conventional radio frequency circuit, the antenna switching is performed according to the signal strengths of different antennas and different radio frequency paths, and specifically, the radio frequency circuit determines the signal strengths of antennas corresponding to different radio frequency paths according to the level difference of the radio frequency paths when receiving signals.
In a Frequency Division Duplex (FDD) Frequency band, the actual signal receiving and transmitting conditions of the corresponding antenna may not be shown in some cases only by the level difference between the rf paths. Therefore, on the basis of considering the receiving levels of the first radio frequency path and the second radio frequency path, the isolation between the first antenna corresponding to the first radio frequency path and the second antenna corresponding to the second radio frequency path is further increased according to the transmitting power of the two radio frequency paths for judgment, so that the radio frequency signal receiving and sending conditions of the first antenna and the second antenna are reflected more accurately, antenna switching is performed accordingly, more accurate antenna switching control can be realized, and the signal strength of the radio frequency circuit and the electronic equipment using the radio frequency circuit is further improved.
In some embodiments of the present application, fig. 4 illustrates a fourth flowchart of a control method of a radio frequency circuit according to an embodiment of the present application, and as illustrated in fig. 4, controlling the radio frequency circuit to switch a radio frequency path according to a first receiving level, a second receiving level, a first transmitting power and a second transmitting power includes:
and step 406, controlling the radio frequency circuit to switch the radio frequency path under the condition that the isolation degree is greater than or equal to the preset isolation degree threshold value.
In the embodiment of the present application, first, a level difference between a first antenna and a second antenna is determined according to a first received level and a second received level, specifically, an absolute value of a difference between the first received level and the second received level is calculated, so as to obtain a level difference δ.
Further, the level difference δ is compared with a preset level difference threshold. If the level difference δ is greater than or equal to the first level difference threshold and is less than or equal to the second level difference threshold, the level difference δ is considered to be in a specific range, and the antenna switching is not suitable to be performed by considering the magnitude of the level difference δ alone, so that the isolation is further determined according to the first transmission power and the second transmission power.
Wherein the degree of isolation between the first antenna on the first radio frequency path and the second antenna on the second radio frequency path may be represented by an absolute value of a difference between the first transmit power and the second transmit power.
And if and only if the isolation degree is greater than or equal to the isolation degree threshold value, controlling the radio frequency circuit to switch the radio frequency access, and if the isolation degree is less than the isolation degree threshold value, not switching the radio frequency access.
The first level difference threshold value ranges from 3dB to 8dB, and the second level difference threshold value ranges from 10dB to 14dB.
The embodiment of the application judges by increasing the isolation, so that the radio frequency signal receiving and sending conditions of the first antenna and the second antenna are reflected more accurately, antenna switching is carried out, more accurate antenna switching control can be realized, and the signal intensity of the radio frequency circuit and the electronic equipment using the radio frequency circuit is improved.
In some embodiments of the present application, the radio frequency circuit is controlled to maintain a current radio frequency path in case the level difference is smaller than a first level difference threshold, or in case the isolation is smaller than an isolation threshold; and controlling the radio frequency circuit and switching the radio frequency path under the condition that the level difference is larger than a second level difference threshold value.
In the embodiment of the application, if the level difference between the first radio frequency path and the second radio frequency path is smaller than the first level difference threshold, it is indicated that the signal strength between the first antenna and the second antenna is close, and antenna switching is not needed, and at this time, the radio frequency circuit is controlled not to perform antenna switching, so that data interruption caused by frequent antenna switching is avoided.
And if the level difference is larger than a second level difference threshold value, the signal strength difference between the first antenna and the second antenna is larger, and the radio frequency circuit is controlled to switch the antennas at the moment, so that the radio frequency circuit works on a radio frequency channel with stronger signals, and the signal strength of the radio frequency circuit and the electronic equipment is improved.
It should be noted that, in the control method of the radio frequency circuit provided in the embodiment of the present application, the execution main body may be a control device of the radio frequency circuit, or a control module of the control device of the radio frequency circuit, which is used for executing the method of controlling the radio frequency circuit. In the embodiments of the present application, a method for a control device of a radio frequency circuit to execute control of the radio frequency circuit is taken as an example, and a device of the control device of the radio frequency circuit provided in the embodiments of the present application is described.
In some embodiments of the present application, fig. 5 shows a block diagram of a control device of a radio frequency circuit according to an embodiment of the present application, and as shown in fig. 5, the control device 500 of the radio frequency circuit includes:
a first measurement unit 502, configured to output a preset reference power through the calibrated first radio frequency path, and measure a first feedback value corresponding to the reference power;
a second measurement unit 504, configured to output the reference power through a second rf path and measure a second feedback value when the second rf path outputs the reference power;
a determining unit 506, configured to calculate a difference between the first feedback value and the second feedback value, and record the difference as a first compensation value; and determining the first transmitting power of the second radio frequency path according to the first compensation value.
In the embodiment of the application, the radio frequency circuit comprises two radio frequency paths, specifically, a first radio frequency path and a second radio frequency path, the first radio frequency path and the second radio frequency path are respectively connected with the first antenna and the second antenna, and when the electronic device works, the paths can be switched according to the signal strength of the first antenna and the signal strength of the second antenna, so that smooth data communication of the electronic device is ensured.
When transmitting a radio frequency signal through any antenna, i.e. through a radio frequency path, the transmission power thereof needs to be determined. And for the radio frequency circuit with the two radio frequency paths, calibrating a first radio frequency path to obtain the accurate transmitting power of the first radio frequency path.
Specifically, a preset reference power is output through the calibrated first radio frequency path, and the reference power can be customized according to requirements, such as the reference power is 20dBm, 23dBm, and the like. When the output power through the first radio frequency path is the reference power, the FBRX detection result at this time is measured, that is, the first feedback value when the reference power is output through the first radio frequency path is measured.
Furthermore, after the first feedback value is obtained, the first rf path may be switched to the second rf path to output the reference power, and the corresponding second feedback value is detected while the second rf path outputs the reference power, and the difference between the first feedback value and the second feedback value is measured and compared by an electronic device provided with an rf circuit, and is compensated, so that the transmission power of the second rf path, that is, the first transmission power, may be quickly calculated by measuring the corresponding FBRX detection result, that is, the third feedback value when the power is output through the second rf path, while the power is output through the second rf path, and according to the first feedback value and the third feedback value.
When the specific transmission power of the second rf path, i.e. the first transmission power, is determined through the first feedback value, the third feedback value and the reference power, the DPDT switch path may be controlled after the calibrated first rf path outputs the preset reference power, so as to output the reference power through the second rf path.
It should be noted that, since the second rf path has not been calibrated, the step of "outputting the reference power through the second rf path" herein does not control the second rf path to accurately output the reference power, but the power at the input terminal of the DPDT remains unchanged after the DPDT switches paths.
After the DPDT is switched to the second RF path, a second feedback value of the second RF path is measured. And measuring and comparing the difference between the first feedback value and the second feedback value, compensating the difference, and obtaining the accurate transmitting power of the second radio frequency channel, namely the first transmitting power according to the first compensation value, wherein the corresponding first compensation value is the difference between the first feedback value and the second feedback value. Therefore, the embodiment of the application can obtain the accurate transmitting power of the two radio frequency paths under the condition of only carrying out calibration once.
According to the embodiment of the application, the accurate transmitting power of the radio frequency access is obtained by performing power calibration on one radio frequency access of the plurality of radio frequency accesses, then the FBRX detection results are respectively acquired on different radio frequency accesses and when the same power is output, namely the difference between the first feedback value and the third feedback value, the opportunity transmitting power of the uncalibrated radio frequency access is calculated according to the difference, so that the accurate transmitting power of the uncalibrated radio frequency access can be obtained under the condition of performing calibration only once, the time consumption for obtaining the transmitting power of the double radio frequency accesses and the complexity of parameter setting can be effectively reduced, and the work efficiency of the radio frequency circuit and the electronic equipment which use the embodiment of the application can be improved.
In some embodiments of the present application, the determining unit 506 is configured to determine a target feedback value according to a sum of the third feedback value and the first compensation value; and determining the first transmitting power according to the target feedback value and the reference power.
In an embodiment of the present application, the target feedback value is determined by a sum of the third feedback value and the first compensation value. Specifically, when the reference power is output on the first rf path, the obtained FBRX result, that is, the first feedback Value is Value1, and after the DPDT is switched to the second rf path, the measured FBRX result, that is, the second feedback Value is Value2, as can be seen from the above embodiment, the first compensation Value Offset satisfies the formula: offset = Value1-Value2.
Therefore, when the rf circuit is normally operated, and power output is performed through the second rf loop, value1'= Value2' + Offset is satisfied, where Value2 'is a third feedback Value measured when power output is performed through the second rf loop, and according to the sum of the third feedback Value2' and the first compensation Value Offset, the transmit power when the power is output through the first rf loop can be reflected, and since the first rf loop is calibrated, the transmit power is accurate, and further, the accurate transmit power of the second rf loop can be obtained through the corresponding relationship, so that accurate transmit power of two rf paths can be determined when only one rf path is calibrated.
In some embodiments of the present application, the first measurement unit 502 is configured to collect port power of the second rf path; calculating the difference between the reference power and the port power and recording the difference as a second compensation value;
the determining unit 506 is configured to determine the actual power according to the sum of the reference power and the second compensation value; and determining the first transmitting power according to the target feedback value and the actual power.
In the embodiment of the present application, the first compensation coefficient, that is, the difference between the first feedback value and the second feedback value, actually represents the data difference between the directional Coupler1 disposed on the first rf path and the directional Coupler2 disposed on the second rf path, and because there is path insertion loss, when the distance between the antenna and the directional Coupler is longer on the second rf path, that is, the path is longer, the path insertion loss of the antenna will also become larger, which causes the rf power actually output from the second antenna, that is, the actual output power of the second rf path is not equal to the power input at the DPDT input end, and causes the finally determined first output power of the second path to be not in accordance with the actual output power.
Therefore, when the second rf path outputs the reference power, the port power of the second rf path may be collected, the port power is based on the measured actual power, so that the error caused by the path insertion loss is removed, and the difference between the reference power and the port power is calculated and recorded as the second compensation value, which is a compensation value considering the path insertion loss and is used to compensate the path insertion loss when determining the first transmit power of the second rf path.
Further, when the actual transmission power of the second rf path, that is, the first transmission power is determined, the actual transmission power may be determined according to the sum of the reference power and the second compensation value, that is, when the second rf path transmits an rf signal, the actual output power of the second rf path determines the first transmission power according to the actual power and the target feedback value, which may effectively avoid an error caused by path insertion loss, and further, under the condition of one calibration, obtain accurate transmission powers of the two paths.
In some embodiments of the present application, the calibration unit 508 is further included to perform power calibration on the first radio frequency path to obtain the second transmission power of the first radio frequency path.
In the embodiment of the present application, one of the two radio frequency paths is subjected to power calibration once, specifically, the first radio frequency path is subjected to power calibration, and the accurate transmission power of the first radio frequency path, that is, the second transmission power, is obtained through single power calibration, so that the accurate transmission power of the other radio frequency path, that is, the accurate transmission power of the second radio frequency path, that is, the first transmission power, is further obtained according to the FBRX detection result, and thus, the accurate transmission power of the two radio frequency paths is determined under the condition that only one radio frequency path is calibrated.
In some embodiments of the present application, the first measurement unit 502 collects a first reception level of a first radio frequency path and a second reception level of a second radio frequency path;
the determining unit 506 is configured to control the radio frequency circuit to switch the radio frequency path according to the first receiving level, the second receiving level, the first transmitting power, and the second transmitting power.
In this embodiment, in the working process of the conventional radio frequency circuit, the antenna switching is performed according to the signal strengths of different antennas and different radio frequency paths, and specifically, the radio frequency circuit determines the signal strengths of antennas corresponding to different radio frequency paths according to the level difference of the radio frequency paths when receiving signals.
In a Frequency Division Duplex (FDD) Frequency band, the actual signal receiving and transmitting conditions of the corresponding antenna may not be shown in some cases only by the level difference between the radio Frequency paths. Therefore, on the basis of considering the receiving levels of the first radio frequency path and the second radio frequency path, the isolation between the first antenna corresponding to the first radio frequency path and the second antenna corresponding to the second radio frequency path is further increased according to the transmitting power of the two radio frequency paths for judgment, so that the radio frequency signal receiving and sending conditions of the first antenna and the second antenna are reflected more accurately, antenna switching is performed accordingly, more accurate antenna switching control can be realized, and the signal strength of the radio frequency circuit and the electronic equipment using the radio frequency circuit is further improved.
In some embodiments of the present application, the determining unit 506 is configured to determine a level difference from an absolute value of a difference of the first reception level and the second reception level; determining isolation according to an absolute value of a difference between the first transmitting power and the second transmitting power when the level difference is greater than or equal to a preset first level difference threshold and less than or equal to a preset second level difference threshold; and controlling the radio frequency circuit to switch the radio frequency path under the condition that the isolation degree is greater than or equal to a preset isolation degree threshold value.
In the embodiment of the present application, first, a level difference between a first antenna and a second antenna is determined according to a first received level and a second received level, specifically, an absolute value of a difference between the first received level and the second received level is calculated, so as to obtain a level difference δ.
Further, the level difference δ is compared with a preset level difference threshold. If the level difference delta is larger than or equal to the first level difference threshold value and is smaller than or equal to the second level difference threshold value, the level difference delta is considered to be in a specific range, and the antenna switching is not suitable to be carried out by considering the size of the level difference delta, so that the isolation is further determined according to the first transmitting power and the second transmitting power.
Wherein the degree of isolation between the first antenna on the first radio frequency path and the second antenna on the second radio frequency path may be represented by an absolute value of a difference between the first transmit power and the second transmit power.
And if and only if the isolation degree is greater than or equal to the isolation degree threshold value, controlling the radio frequency circuit to switch the radio frequency access, and if the isolation degree is less than the isolation degree threshold value, not switching the radio frequency access.
The first level difference threshold value ranges from 3dB to 8dB, and the second level difference threshold value ranges from 10dB to 14dB.
The embodiment of the application judges by increasing the isolation degree, so that the radio frequency signal receiving and sending conditions of the first antenna and the second antenna are more accurately reflected, antenna switching is carried out, more accurate antenna switching control can be realized, and the signal intensity of the radio frequency circuit and the electronic equipment applying the radio frequency circuit is further improved.
In some embodiments of the present application, the determining unit 506 is configured to control the radio frequency circuit to maintain the current radio frequency path if the level difference is smaller than the first level difference threshold, or if the isolation is smaller than the isolation threshold; and controlling the radio frequency circuit and switching the radio frequency path under the condition that the level difference is larger than a second level difference threshold value.
In the embodiment of the application, if the level difference between the first radio frequency path and the second radio frequency path is smaller than the first level difference threshold, it is indicated that the signal strength between the first antenna and the second antenna is close, and antenna switching is not needed, and at this time, the radio frequency circuit is controlled not to perform antenna switching, so that data interruption caused by frequent antenna switching is avoided.
And if the level difference is larger than the second level difference threshold, the signal strength difference between the first antenna and the second antenna is larger, and at the moment, the radio frequency circuit is controlled to switch the antennas, so that the radio frequency circuit works on a radio frequency channel with stronger signals, and the signal strength of the radio frequency circuit and the electronic equipment is improved.
The control device of the radio frequency circuit in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device can be mobile electronic equipment or non-mobile electronic equipment. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine or a self-service machine, and the like, and the embodiments of the present application are not particularly limited.
The control device of the radio frequency circuit in the embodiment of the present application may be a device having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.
The control device of the radio frequency circuit provided in the embodiment of the present application can implement each process implemented by the method embodiments of fig. 1 to fig. 4, and is not described here again to avoid repetition.
Optionally, fig. 6 shows a block diagram of an electronic device according to an embodiment of the present application, and as shown in fig. 6, an electronic device 600 is further provided in the embodiment of the present application and includes a processor 602, a memory 604, and a program or an instruction stored in the memory 604 and capable of running on the processor 602, where the program or the instruction is executed by the processor 602 to implement each process of the embodiment of the control method for a radio frequency circuit, and can achieve the same technical effect, and details are not repeated here to avoid repetition.
It should be noted that the electronic device in the embodiment of the present application includes the mobile electronic device and the non-mobile electronic device described above.
Fig. 7 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application.
The electronic device 1900 includes, but is not limited to: a radio frequency unit 1901, a network module 1902, an audio output unit 1903, an input unit 1904, a sensor 1905, a display unit 1906, a user input unit 1907, an interface unit 1908, a memory 1909, and a processor 1910.
Those skilled in the art will appreciate that the electronic device 1900 may further include a power supply 1911 (e.g., a battery) for supplying power to various components, and the power supply 1911 may be logically connected to the processor 1910 through a power management system, so that functions such as charging, discharging, and power consumption management are implemented through the power management system. The electronic device structure shown in fig. 7 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is omitted here.
The rf unit 1901 includes a radio frequency circuit, configured to output a preset reference power through a calibrated first radio frequency path, and measure a first feedback value corresponding to the reference power; outputting the reference power through a second radio frequency channel, and measuring a second feedback value when the second radio frequency channel outputs the reference power;
the processor 1910 is configured to calculate a difference between the first feedback value and the second feedback value, and record the difference as a first compensation value; a first transmit power is determined based on the first compensation value.
According to the embodiment of the application, the accurate transmitting power of the radio frequency access is obtained by performing power calibration on one radio frequency access of the plurality of radio frequency accesses, then the FBRX detection results are respectively acquired on different radio frequency accesses and when the same power is output, namely the difference between the first feedback value and the third feedback value, the opportunity transmitting power of the uncalibrated radio frequency access is calculated according to the difference, so that the accurate transmitting power of the uncalibrated radio frequency access can be obtained under the condition of performing calibration only once, the time consumption for obtaining the transmitting power of the double radio frequency accesses and the complexity of parameter setting can be effectively reduced, and the work efficiency of the radio frequency circuit and the electronic equipment which use the embodiment of the application can be improved.
Optionally, the rf unit 1901 is further configured to measure a third feedback value corresponding to the second rf path when power output is performed through the second rf path;
the processor 1910 is further configured to determine a target feedback value according to a sum of the third feedback value and the first compensation value; and determining the first transmitting power according to the target feedback value and the reference power.
The radio frequency unit 1901 is further configured to collect port power of a second radio frequency channel; calculating the difference between the reference power and the port power and recording the difference as a second compensation value;
The rf unit 1901 is further configured to acquire a first receiving level of a first rf path and a second receiving level of a second rf path;
The processor 1910 is further configured to determine a level difference according to an absolute value of a difference between the first reception level and the second reception level; determining isolation according to an absolute value of a difference between the first transmitting power and the second transmitting power when the level difference is greater than or equal to a preset first level difference threshold and less than or equal to a preset second level difference threshold; and controlling the radio frequency circuit to switch the radio frequency path under the condition that the isolation is greater than or equal to a preset isolation threshold.
According to the embodiment of the application, the accurate transmitting power of the radio frequency access is obtained by performing power calibration on one radio frequency access of the plurality of radio frequency accesses, then the FBRX detection results are respectively acquired on different radio frequency accesses and when the same power is output, namely the difference between the first feedback value and the second feedback value, the opportunity transmitting power of the uncalibrated radio frequency access is calculated according to the difference, so that the accurate transmitting power of the uncalibrated radio frequency access can be obtained under the condition of performing calibration only once, the time consumption for obtaining the transmitting power of the double radio frequency accesses and the complexity of parameter setting can be effectively reduced, and the work efficiency of the radio frequency circuit and the electronic equipment which use the embodiment of the application can be improved.
It should be understood that in the embodiment of the present application, the input Unit 1904 may include a Graphics Processing Unit (GPU) 5082 and a microphone 5084, and the Graphics processor 5082 processes image data of still pictures or videos obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode.
The display unit 1906 may include a display panel 5122, and the display panel 5122 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1907 includes a touch panel 5142 and other input devices 5144. A touch panel 5142 is also referred to as a touch screen. The touch panel 5142 may include two parts of a touch detection device and a touch controller. Other input devices 5144 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein. The memory 1909 may be used to store software programs as well as various data including, but not limited to, application programs and an operating system. Processor 1910 may integrate an application processor, which primarily handles operating systems, user interfaces, applications, etc., and a modem processor, which primarily handles wireless communications. It is to be appreciated that the modem processor described above may not be integrated into processor 1910.
The embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the embodiment of the control method for a radio frequency circuit, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted here.
The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.
The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement each process of the control method embodiment of the radio frequency circuit, and can achieve the same technical effect, and in order to avoid repetition, the description is omitted here.
It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application or portions thereof that contribute to the prior art may be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the method according to the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the present embodiments are not limited to those precise embodiments, which are intended to be illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope of the appended claims.
Claims (9)
1. A method of controlling a radio frequency circuit, the radio frequency circuit comprising a first radio frequency path and a second radio frequency path, the method comprising:
outputting a preset reference power through the calibrated first radio frequency path, and measuring a first feedback value corresponding to the reference power;
outputting the reference power through the second radio frequency channel, and measuring a second feedback value when the reference power is output by the second radio frequency channel;
calculating the difference value between the first feedback value and the second feedback value, and recording as a first compensation value;
determining a first transmission power of the second radio frequency path according to the first compensation value;
further comprising:
measuring a third feedback value corresponding to the second radio frequency channel under the condition of power output through the second radio frequency channel;
collecting port power of the second radio frequency channel;
calculating the difference between the reference power and the port power and recording as a second compensation value;
the determining the first transmit power according to the first compensation value includes:
determining a target feedback value according to the sum of the third feedback value and the first compensation value;
determining actual power according to the sum of the reference power and the second compensation value;
and determining the first transmitting power according to the target feedback value and the actual power.
2. The method of claim 1,
the determining the first transmit power according to the first compensation value includes:
and determining the first transmission power according to the target feedback value and the reference power.
3. The method according to claim 1 or 2, wherein before the outputting of the preset reference power through the calibrated first rf path, the method further comprises:
and carrying out power calibration on the first radio frequency path to obtain second transmitting power of the first radio frequency path.
4. The method of claim 3, further comprising:
acquiring a first receiving level of the first radio frequency channel and a second receiving level of the second radio frequency channel;
controlling the radio frequency circuit to switch a radio frequency path according to the first receiving level, the second receiving level, the first transmitting power and the second transmitting power.
5. The method of claim 4, wherein the controlling the radio frequency circuit to switch the radio frequency path according to the first reception level, the second reception level, the first transmission power, and the second transmission power comprises:
determining a level difference according to an absolute value of a difference between the first reception level and the second reception level;
determining isolation according to an absolute value of a difference between the first transmitting power and the second transmitting power when the level difference is greater than or equal to a preset first level difference threshold and less than or equal to a preset second level difference threshold;
and controlling the radio frequency circuit to switch a radio frequency path under the condition that the isolation is greater than or equal to a preset isolation threshold.
6. The method of claim 5, further comprising:
controlling the radio frequency circuit to maintain a current radio frequency path when the level difference is less than the first level difference threshold or when the isolation is less than the isolation threshold;
controlling the radio frequency circuit and switching a radio frequency path if the level difference is greater than the second level difference threshold.
7. A control apparatus for a radio frequency circuit, the radio frequency circuit including a first radio frequency path and a second radio frequency path, the apparatus comprising:
the first measurement unit is used for outputting preset reference power through the calibrated first radio frequency path and measuring a first feedback value corresponding to the reference power;
the second measurement unit is used for outputting the reference power through the second radio frequency channel and measuring a second feedback value when the reference power is output by the second radio frequency channel;
the determining unit is used for calculating the difference value between the first feedback value and the second feedback value and recording the difference value as a first compensation value; determining a first transmission power of the second radio frequency path according to the first compensation value;
further comprising:
measuring a third feedback value corresponding to the second radio frequency channel under the condition of power output through the second radio frequency channel;
collecting port power of the second radio frequency channel;
calculating the difference between the reference power and the port power and recording as a second compensation value;
the determining the first transmit power according to the first compensation value includes:
determining a target feedback value according to the sum of the third feedback value and the first compensation value;
determining actual power according to the sum of the reference power and the second compensation value;
and determining the first transmitting power according to the target feedback value and the actual power.
8. An electronic device comprising a memory having stored thereon a program or instructions and a processor for implementing the steps of the method according to any one of claims 1 to 6 when executing the program or instructions.
9. A readable storage medium on which a program or instructions are stored, characterized in that the program or instructions, when executed by a processor, implement the steps of the method according to any one of claims 1 to 6.
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| US6819938B2 (en) * | 2001-06-26 | 2004-11-16 | Qualcomm Incorporated | System and method for power control calibration and a wireless communication device |
| KR100414072B1 (en) * | 2001-10-08 | 2004-01-07 | 엘지전자 주식회사 | Transmission power compensation apparatus and method for mobile communication device |
| CN102056275A (en) * | 2009-11-03 | 2011-05-11 | 中兴通讯股份有限公司 | Closed loop power control method for frequency hopping system and base station |
| CN102324991B (en) * | 2011-08-16 | 2013-11-06 | 惠州Tcl移动通信有限公司 | Method for calibrating mobile terminal to transmit power in global system for mobile communication (GSM) frequency band |
| US9401769B2 (en) * | 2013-06-04 | 2016-07-26 | Apple Inc. | Methods for calibrating receive signal strength data in wireless electronic devices |
| CN105933034B (en) * | 2016-04-22 | 2019-02-01 | Oppo广东移动通信有限公司 | A kind of line loss measurement method and device |
| CN106712798A (en) * | 2016-12-30 | 2017-05-24 | 宇龙计算机通信科技(深圳)有限公司 | Method and device for calculating insertion loss of receiving circuit of radio frequency circuit, and radio frequency circuit |
| CN111313919B (en) * | 2020-02-12 | 2021-10-15 | 广州全盛威信息技术有限公司 | Multifunctional receiver |
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